Emergency vehicle double-stack light-bar



FIG. 1 is a perspective view of a emergency vehicle double-stacklight-bar, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines depict unclaimed environmental subject matter.

The ornamental design for an emergency vehicle double-stack light-bar,as shown.